MCP1502 datasheet(3/28 Pages) MICROCHIP

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DS20006593A-page 3

MCP1502

1.0

PIN FUNCTION TABLE

The pin functions are described in Table 1-1.

1.1

Buffered VREF Output (OUT)

This is the buffered reference output. The output driver

is tri-stated when in shutdown.

1.2

System Ground (GND)

This is the power supply return and should be

connected to system ground.

1.3

Shutdown Pin (SHDN)

This is a digital input that will place the device in

shutdown. The device should be allowed to power up

before using this feature. This pin is active-low. When

this pin is low, there will be no output.

1.4

Power Supply Input (VDD)

This power pin also serves as the input voltage for the

voltage reference. Refer to Section 2.0 “Electrical

Characteristics” to determine minimum voltage

based on the device. It is recommended to connect a

0.1 µF capacitor very close to the VDD pin.

TABLE 1-1:

PIN FUNCTION TABLE

SOT-23

Symbol

Function

1OUT

VREF Output

2, 3, 5

GND

System Ground

SHDN

Shutdown Pin Active-Low

6VDD

Power Supply Input

Note:

Before using the Shutdown pin, the device

should first be powered up. Once the

device is fully powered up, the Shutdown

pin can be used.

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